Simple type electric heating tool and heating device thereof

ABSTRACT

An electric heating tool includes a body to which a power supply member is mounted. A heating device includes a power receiving connector, a seat mounted to the power receiving connector, two connection legs, and a heating element. The power receiving connector is mounted to the power supply member and has two electrodes electrically connected to two electrodes of the power supply member. Each connection leg is received in one of two through-holes of the seat and includes a connection end and a heating end. The connection ends of the connection legs are electrically connected to the electrodes of the power receiving connector. The heating element is connected to the heating ends of the connection legs.

CROSS REFERENCE

The present application is a continuation of prior U.S. patentapplication Ser. No. 14/320,700, filed on Jul. 1, 2014, entitled “SIMPLETYPE ELECTRIC HEATING TOOL AND HEATING DEVICE THEREOF”, which claimspriority of Taiwan patent application Ser. No. 103101257, filed on Jan.14, 2014, the entirety of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

The present invention relates to an electric heating tool and, moreparticularly, to a simple type electric heating tool and a heatingdevice of the simple type electric heating tool.

A typical soldering iron includes a handle and a tip. After plugging inor mounting a battery into the handle to provide electrical connectionwith the tip, the tip generates heat by electric current passingtherethrough, providing a high temperature for a soldering operation.

However, the tip is generally fixed to the handle, such that troublesomeprocessing operations are required in manufacture of the soldering iron.Furthermore, a worker must fix the tip to the handle by a specialtechnique, increasing the manufacturing costs of the soldering iron.

Furthermore, the tip is generally pointed. If a user intends to use atip having a different shape, purchase of a soldering iron including atip with a different shape is inevitable as well as inconvenient.

Thus, a need exists for a simple type electric heating tool and aheating device for the simple type electric heating tool to overcome thedisadvantages of the conventional soldering irons.

BRIEF SUMMARY OF THE INVENTION

In a first aspect of the present invention, an electric heating tool isprovided and includes a body having a holding portion and a connectionportion spaced from the holding portion. The holding portion includes ahandle adapted to be held by a user. The body further includes a powersupply member mounted to the connection portion. The power supply memberincludes a first electrode and a second electrode. A heating deviceincludes a power receiving connector, a seat, two connection legs, and aheating element. The power receiving connector includes a firstelectrode and a second electrode. The power receiving connector isdetachably mounted to the power supply member. The first electrode ofthe power supply member is electrically connected to the first electrodeof the power receiving connector. The second electrode of the powersupply member is electrically connected to the second electrode of thepower receiving connector. The seat is mounted to an end of the powerreceiving connector. The seat includes two through-holes. Eachconnection leg is inserted into one of the through-holes from an end ofthe seat distant to the power receiving connector. Each connection legincludes a connection end and a heating end. The connection end of oneof the connection legs extends through one of the through-holes and iselectrically connected to the first electrode of the power receivingconnector. The connection end of the other connection leg extendsthrough the other through-hole and is electrically connected to thesecond electrode of the power receiving connector. The heating elementis connected to the heating ends of the connection legs.

In a second aspect of the present invention, a heating device for anelectric heating tool is provided and includes a power receivingconnector having a first electrode and a second electrode. A seat ismounted to an end of the power receiving connector and includes twothrough-holes. Two connection legs are provided. Each connection leg isinserted into one of the through-holes from an end of the seat distantto the power receiving connector. Each connection leg includes aconnection end and a heating end. The connection end of one of theconnection legs extends through one of the through-holes and iselectrically connected to the first electrode of the power receivingconnector. The connection end of the other connection leg extendsthrough the other through-hole and is electrically connected to thesecond electrode of the power receiving connector. A heating element isconnected to the heating ends of the connection legs.

In an embodiment, the seat can further include a narrow located in eachthrough-hole. Each through-hole has a first width at the narrow. Thefirst width is smaller than a second width of an end of eachthrough-hole distant to the power receiving connector. The connectionend of each connection leg has a width smaller than a width of theheating end of each connection leg. Each connection leg further includesa shoulder between the connection end and the heating end. The shouldersof the connection legs respectively abut the narrows in thethrough-holes.

In an embodiment, the through-holes are parallel to each other. Eachthrough-hole has circular cross sections. Each connection leg is anintegral member in a form of a hollow, circular tube formed by pressing.

In an embodiment, the power supply member is tubular. The firstelectrode of the power supply member is located at a bottom of the powersupply member. The second electrode of the power supply member islocated around the first electrode of the power supply member. Thesecond electrode of the power supply member is an internally threadedpart. The first electrode of the power receiving connector is located ata bottom of the power receiving connector. The second electrode of thepower receiving connector is located around the first electrode of thepower receiving connector. The second electrode of the power receivingconnector is an externally threaded part. The power receiving connectoris detachably and threadedly engaged with the power supply member.

In a first example, the heating element of the heating device is a wireand includes a pointed bend between two ends of the heating element.

In a second example, the heating element of the heating device issubstantially a parallelepiped and includes a side facing away from thetwo connection legs. The side of the heating element has a flat or slideface.

In an embodiment, the power receiving connector, the connection legs,and the heating element of the heating device are made of electricallyconductive material, and the seat is made of electrically insulatingmaterial.

In an embodiment, a chuck is mounted to the connection portion of thebody. The chuck includes an end rotatably received in a receiving spaceof the handle. The power supply member is mounted to the other end ofthe chuck distant to the holding portion.

In an embodiment, the handle further includes a ledge on an innerperiphery delimiting the receiving space. A gap is defined between twoends of the ledge. The handle further includes a stop protruding intothe receiving space and adjoining the gap. The chuck includes aprotrusion passable through the gap. The protrusion slideably abuts aside of the ledge to permit the chuck to rotate relative to the handle.The protrusion selectively abuts the stop. Thus, the stop prevents thechuck from disengaging from the handle.

In an embodiment, the handle further includes a slot adjoining the gap.A block is mounted to the handle and includes an inner side on which thestop is formed. The stop extends from an outer side of the handlethrough the slot into the receiving space.

In an embodiment, the handle is a hollow, circular tube.

In an embodiment, an anti-slip sleeve is mounted around the handle andabuts an outer side of the block. The handle further includes a controlbutton adapted to be operated by the user to form a closed loop enablingthe heating element to generate heat. An end cap is removably mounted tothe other end of the handle distant to the connection portion. The endcap closes the other end of the handle. The receiving space of thehandle is adapted to receive a battery. The first and second electrodesof the power supply member are adapted to be electrically connected to apositive pole and a negative pole of the battery.

Other objectives, advantages, and novel features of the presentinvention will become clearer in light of the following detaileddescription described in connection with the accompanying drawings.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an electric heating tool according tothe present invention, with the electric heating tool including a firstexample of a heating device.

FIG. 2 is an exploded, perspective view of the electric heating toolaccording to the present invention, with the first example of theheating device and a second example of the heating device selectivelyused.

FIG. 3 is an exploded, perspective view of the first example of theheating device.

FIG. 4 is a cross sectional view of the electric heating tool includingthe first example of the heating device.

FIG. 5 is a perspective view of the electric heating tool including thefirst example of the heating device, with a chuck of the electricheating tool rotated.

FIG. 6 is a cross sectional view of the electric heating tool includingthe second example of the heating device.

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIGS. 1-6, an electric heating tool 10 according tothe present invention includes a body 20 and a heating device 30, 30 a.A first example of the heating device 30 is shown in FIGS. 1-5. A secondexample of the heating device 30 a is shown in FIGS. 2 and 6.

With reference to FIGS. 1-6, the body 20 includes a holding portion 21and a connection portion 22 spaced from the holding portion 21. Theholding portion 21 includes a handle 23 adapted to be held by a user.The handle 23 is in the form of a hollow, circular tube and includes areceiving space 231. The receiving space 231 of the handle 23 is adaptedto receive a battery 90. A ledge 232 is formed on an inner peripherydelimiting the receiving space 231. A gap 233 is defined between twoends of the ledge 232. The handle 23 further includes a slot 234adjoining the gap 233. A block 235 is mounted to the handle 23 andincludes a stop 236 on an inner side thereof. The stop 236 extends froman outer side of the handle 23 through the slot 234 into the receivingspace 231 and adjoins the gap 233.

An anti-slip sleeve 237 is mounted around the handle 23. The anti-slipsleeve 237 abuts an outer side of the block 235. The handle 23 furtherincludes a control button 238 adapted to be operated by the user to forma closed loop enabling the heating element 34, 35 a to generate heat. Anend cap 239 is removably mounted to the other end of the handle 23distant to the connection portion 22. The end cap 239 closes the otherend of the handle 23.

A chuck 24 is mounted to the connection portion 22 of the body 20. Anend of the chuck 24 is rotatably received in the receiving space 231 ofthe handle 23. The chuck 24 includes a protrusion 241 passable throughthe gap 233. The protrusion 241 slideably abuts a side of the ledge 232to permit the chuck 24 to rotate relative to the handle 23. Furthermore,the protrusion 241 selectively abuts the stop 236, such that the stop236 prevents the chuck 24 from disengaging from the handle 23.

A power supply member 242 is mounted to the other end of the chuck 24distant to the holding portion 21. The power supply member 242 istubular and includes a first electrode 243 and a second electrode 244.The first electrode 243 of the power supply member 242 is located at abottom of the power supply member 242. The second electrode 244 of thepower supply member 242 is located around the first electrode 243 of thepower supply member 242 and is in the form of an internally threadedpart. The first and second electrodes 243 and 244 of the power supplymember 242 are adapted to be electrically connected to a positive poleand a negative pole of the battery 90.

In both of the first and second examples, the heating device 30, 30 aincludes a power receiving connector 31, a seat 32, two connection legs33, 33 a, and a heating element 34, 35 a. The power receiving connector31 includes a first electrode 311 and a second electrode 312. The firstelectrode 311 of the power receiving connector 31 is located at a bottomof the power receiving connector 31. The second electrode 312 of thepower receiving connector 31 is located around the first electrode 311of the power receiving connector 31. The second electrode 312 of thepower receiving connector 31 is in the form of an externally threadedpart. The power receiving connector 31 is detachably and threadedlyengaged with the power supply member 242, with the first electrode 243of the power supply member 242 electrically connected to the firstelectrode 311 of the power receiving connector 31, and with the secondelectrode 244 of the power supply member 242 electrically connected tothe second electrode 312 of the power receiving connector 31.

The seat 32 is mounted to an end of the power receiving connector 31distant to the power supply member 242. The seat 32 includes twothrough-holes 321. The through-holes 321 are parallel to each other.Each through-hole 321 has circular cross sections. Furthermore, the seat32 further includes a narrow 322 located in each through-hole 321 andlocated adjacent to an end of each through-hole 321 adjacent to thepower receiving connector 31. Each through-hole 321 has a first width atthe narrow 322. The first width is smaller than a second width of an endof each through-hole 321 distant to the power receiving connector 31.

Each connection leg 33, 33 a is inserted into one of the through-holes321 from an end of the seat 32 distant to the power receiving connector31. Each connection leg 33, 33 a includes a connection end 331 and aheating end 332. The connection end 331 of each connection leg 33, 33 ahas a width smaller than a width of the heating end 332 of eachconnection leg 33, 33 a. The connection end 331 of one of the connectionlegs 33, 33 a extends through one of the through-holes 321 and iselectrically connected to the first electrode 311 of the power receivingconnector 31. The connection end 331 of the other connection leg 33, 33a extends through the other through-hole 321 and is electricallyconnected to the second electrode 312 of the power receiving connector31. Each connection leg 33, 33 a further includes a shoulder 333 betweenthe connection end 331 and the heating end 332. The shoulders 333 of theconnection legs 33, 33 a respectively abut the narrows 322 in thethrough-holes 321. Each connection leg 33, 33 a is an integral member inthe form of a hollow, circular tube formed by pressing.

The heating element 34, 35 a is connected to the heating ends 332 of theconnection legs 33, 33 a. In the first example, the heating element 34of the heating device 30 is a wire and includes a pointed bend 341between two ends of the heating element 34. In the second example, theheating element 35 a of the heating device 30 a is substantially aparallelepiped and includes a side facing away from the connection legs33 a. The side of the heating element 35 a has a flat or slide face 351a. It can be appreciated that other types of heating elements 30, 30 acan be used according to different situations to allow easy solderingoperation. The power receiving connector 31, the connection legs 33, 33a, and the heating element 34, 35 a of the heating device 30, 30 a ismade of electrically conductive material, and the seat 32 is made ofelectrically insulating material.

In use, the battery 90 is mounted into the body 20 with the positive andnegative poles of the battery 90 electrically and respectively connectedto the first and second electrodes 243 and 244 of the power supplymember 242. When the control button 238 is moved to an operativeposition, the heating element 34, 35 a generates heat to proceed withsoldering.

The heating device 30, 30 a is simple in structure such that the heatingdevice 30, 30 a can easily be processed and assembled to effectivelyreduce the manufacturing costs of the electric heating tool 10.Furthermore, the connection legs 33, 33 a are formed by pressing toreduce the difficulties in processing and the manufacturing costs.Furthermore, the heating device 30, 30 a is coupled to the body 20 bythreading coupling, allowing the user to rapidly replace the heatingdevice 30, 30 a. Furthermore, since the chuck 24 can rotate relative tothe handle 23, the chuck 24 can be used to adjust the heating device 30,30 a to an appropriate angular position after assembly of the heatingdevice 30, 30 a.

Although preferred embodiments of the present invention have beenillustrated and described, they should not be construed to restrict thescope of the present invention. Therefore, modifications to numericalvalues or substitution of equivalent elements thereof or equivalentchanges and modifications based on the accompanying claims of thepresent invention still fall within the scope covered by the presentinvention.

The invention claimed is:
 1. An electric heating tool comprising: a bodyincluding a holding portion and a connection portion spaced from theholding portion, with the holding portion including a handle adapted tobe held by a user, with the handle further including a receiving spaceand a stop protruding into the receiving space, with a chuck mounted tothe connection portion of the body, with the chuck including an endrotatably received in the receiving space of the handle and a protrusionselectively abutting the stop, with the stop preventing the chuck fromdisengaging from the handle, with the body further including a powersupply member mounted to the connection portion, and with the powersupply member including a first supply electrode and a second supplyelectrode; and a heating device including a power receiving connector,with the power receiving connector including a first receiving electrodeand a second receiving electrode, with the power receiving connectordetachably mounted to the power supply member, with the first supplyelectrode of the power supply member electrically connected to the firstreceiving electrode of the power receiving connector, with the secondsupply electrode of the power supply member electrically connected tothe second receiving electrode of the power receiving connector.
 2. Theelectric heating tool according to claim 1, with the handle furtherincluding a ledge on an inner periphery delimiting the receiving space,with a gap defined between two ends of the ledge, with the stopadjoining the gap, with the protrusion passable through the gap, withthe protrusion slideably abutting a side of the ledge to permit thechuck to rotate relative to the handle.
 3. The electric heating toolaccording to claim 2, with the handle further including a slot adjoiningthe gap, with a block mounted to the handle and including an inner sideon which the stop is formed, with the stop extending from an outer sideof the handle through the slot into the receiving space.
 4. The electricheating tool according to claim 1, with the handle being a hollow,circular tube.
 5. The electric heating tool according to claim 3, withan anti-slip sleeve mounted around the handle, with the anti-slip sleeveabutting an outer side of the block, with the handle further including acontrol button adapted to be operated by the user to form a closed loopenabling the heating element to generate heat.
 6. The electric heatingtool according to claim 1, with an end cap removably mounted to anotherend of the handle distant to the connection portion, with the end capclosing the other end of the handle, with the receiving space of thehandle adapted to receive a battery, with the first and second supplyelectrodes of the power supply member adapted to be electricallyconnected to a positive pole and a negative pole of the battery.